Analysis
- max time kernel
147s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231130-en - resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system - submitted
10/12/2023, 01:48
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231023-en
18 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231130-en
17 signatures
150 seconds
General
- Target file.exe
- Size 1.6MB
- Sample231210-b74qtsbddk
- SHA256 022eb519dfb340f06e968b324448509dfe9f79868eaaa17865eb319006ba9bb8
- MD5 1da46e33194b699fe648be0578680d41
- SHA1 a505cc7ca5e2c9bd5dacbcbafa3b461f8011cb93
- SHA512 def6cf0b0cb6b1e963b8ae71de2ff0360b614803f65bd16f8e855e35f023e3c49b1bfa6591febea6f54a412f1360fdcf6dddb7b736f3d592f46a926805bcaa46
- SSDEEP 49152:qWg8wUmZOzqiavjDUJO/WH89ctcO0ljbbQnIQGotBKqy8TJCHEGU42sn6:ZiUmZOzqiavjDUM/WH89y8bboGO
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
- Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FANBooster131.lnk file.exe - Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" file.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 24 ipinfo.io 25 ipinfo.io - Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini file.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol file.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI file.exe File opened for modification C:\Windows\System32\GroupPolicy file.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
pid pid_target Process procid_target 5020 5016 WerFault.exe 86 - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 file.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString file.exe - Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 436 schtasks.exe 4372 schtasks.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5016 file.exe 5016 file.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 2744 svchost.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 5016 wrote to memory of 436 5016 file.exe 88 PID 5016 wrote to memory of 436 5016 file.exe 88 PID 5016 wrote to memory of 436 5016 file.exe 88 PID 5016 wrote to memory of 4372 5016 file.exe 92 PID 5016 wrote to memory of 4372 5016 file.exe 92 PID 5016 wrote to memory of 4372 5016 file.exe 92 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 file.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in System32 directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:5016 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:436
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:4372
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 16882⤵
- Program crash
PID:5020
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4448
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:4496
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5016 -ip 50161⤵PID:2300
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵PID:2312
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2744
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe
- Size 1.6MB
- SHA256 022eb519dfb340f06e968b324448509dfe9f79868eaaa17865eb319006ba9bb8
- MD5 1da46e33194b699fe648be0578680d41
- SHA1 a505cc7ca5e2c9bd5dacbcbafa3b461f8011cb93
- SHA512 def6cf0b0cb6b1e963b8ae71de2ff0360b614803f65bd16f8e855e35f023e3c49b1bfa6591febea6f54a412f1360fdcf6dddb7b736f3d592f46a926805bcaa46
- SSDEEP 49152:qWg8wUmZOzqiavjDUJO/WH89ctcO0ljbbQnIQGotBKqy8TJCHEGU42sn6:ZiUmZOzqiavjDUM/WH89y8bboGO
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\grandUIAc6gdaz8M1Lg1E\information.txt
- Size 3KB
- SHA256 d3cd1a2ea8a3ffc7d4357966b9ee793c476c46870a7a14de9039a9a65e9fedad
- MD5 c0945d50e3472c366eeed2a9b28d8e6a
- SHA1 3eabd82aa86d0f2c8e0ab6af3be465fe41d12091
- SHA512 904aee05ce1ab87bb46dd71dbeaae519a0e6b8a1e61a1b7c2a23d59d2100ec7c0bbf61c463bd864fba0c7dbe9c843050de9267cbd83769ae7be5545d0279ced2
- MD5 SHA1 SHA512